O2 Sensors, Oxygen Sensors - Narrowband, Wideband, Upstream, Downstream, Denso, O2 Sensors

The oxygen sensor, or O2 sensor, measures the amount of oxygen in your vehicle’s exhaust gases. Your engine’s computer uses this data to help figure out...

The oxygen sensor, or O2 sensor, measures the amount of oxygen in your vehicle’s exhaust gases. Your engine’s computer uses this data to help figure out the current air/fuel ratio, which allows it to maintain fuel efficiency and emissions standards. If your ride starts running rough, you may need to clean or replace this important sensor. Fortunately, you’re at the right place to get the replacement oxygen sensor you need—Summit Racing Equipment!

Narrowband vs. Wideband

A narrowband O2 sensor only informs the computer if your engine is running rich or lean. A wideband sensor measures how rich or...

Narrowband vs. Wideband

A narrowband O2 sensor only informs the computer if your engine is running rich or lean. A wideband sensor measures how rich or how lean the ratio is.

Upstream vs. Downstream

Upstream O2 sensors are positioned before the catalytic converter; downstream sensors are after it.

Top Brands

Oxygen (O2) sensors are crucial to your fuel-injected car, so Summit only carries reliable brands, including, Bosch, NTK, ACDelco, Denso, Holley, and E3 Spark Plugs.

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AEM Electronics Replacement Wideband UEGO Controller Air/Fuel Ratio Gauge Components 30-2004

Oxygen Sensor, Replacement, Wideband UEGO, Air/Fuel Ratio Gauge Component, 5-wire, Thread-in, 0-5 V, 23.00 in. Length, Each

Part Number: AVM-30-2004

4.0 out of 5 stars ( 23 )

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Summit Racing™ Oxygen Sensors SUM-196000

Oxygen Sensor, O2 Sensor, 5-Wire, 0-5 V, Thread In, LSU 4.2, Wideband, Universal, Each

Part Number: SUM-196000

5.0 out of 5 stars ( 1 )

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AEM Electronics Wideband UEGO Sensors 30-2001

Oxygen Sensor, Replacement Wideband, 5-Wire, 0-5 V, Universal, Each

Part Number: AVM-30-2001

4.62 out of 5 stars ( 21 )

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Haltech Wideband Oxygen Sensors HT-010718

Oxygen Sensor, O2 Sensor, Thread In, LSU 4.9, Wideband, Universal, Each

Part Number: HTH-HT-010718

5.0 out of 5 stars ( 1 )

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AutoMeter Wideband Oxygen Sensors 2243

Gauge Sending Unit, Oxygen Sensor, Wideband, Electrical, M18 x 1.5, Universal, Each

Part Number: ATM-2243

4.59 out of 5 stars ( 17 )

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FAST 5-Wire Wideband Oxygen Sensors 170408

O2 Sensor, LSU4 Wideband, 5-Wire, Male 6-Pin Plug, 18mm, Each

Part Number: FST-170408

4.78 out of 5 stars ( 9 )

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AEM Induction FAE Wideband Oxygen Sensors 30-2404

Oxygen Sensor, FAE Wideband, Each

Part Number: AVM-30-2404

Not Yet Reviewed

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Haltech Wideband Hardware Packs HT-010746

Oxygen Sensor, Wideband Hardware Pack, Bolt-in, Includes Bosch LSU 4.9 Sensor, HT-010726 Adaptor Harness, Bung, Kit

Part Number: HTH-HT-010746

Not Yet Reviewed

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Haltech Wideband Oxygen Sensors HT-010714

Oxygen Sensor, O2 Sensor, Thread In, LSU 4.2, Wideband, Universal, Each

Part Number: HTH-HT-010714

Not Yet Reviewed

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AiM Sports Replacement Wideband Sensors X05LSU490

Data Acquisition Component, Wideband Oxygen Sensor, Bosch LSU 4.9, Each

Part Number: AAG-X05LSU490

Not Yet Reviewed

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FAST 5-Wire Wideband Oxygen Sensors 301422

Oxygen Sensor, 5-wire, Wideband, LHA-Type, Thread-in, Wiring Harness, Designed for F.A.S.T. XFI Systems, Each

Part Number: FST-301422

5.0 out of 5 stars ( 1 )

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MSD Power Grid Dual NTK Wideband O2 Modules 7766

Power Grid O2 Module, Wideband Oxygen Sensor, MSD Power Grid, NTK, Each

Part Number: MSD-7766

1.0 out of 5 stars ( 1 )

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Haltech Wideband Oxygen Sensors HT-010712

Oxygen Sensor, Wideband, 5-wire, Bolt-in, Each

Part Number: HTH-HT-010712

Not Yet Reviewed

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Daytona Twin Tec Wideband Exhaust Gas Oxygen Sensors 115001

Oxygen Sensor, Replacement Wideband, 5-Wire, 0-5 V, Universal, Each

Part Number: DTT-115001

5.0 out of 5 stars ( 1 )

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Holley Commander 950 Wideband Replacement O2 Sensors 534-198

Sensors, Replacement, O2 Sensor, Bosch, Wideband, 4-Wire, 0-1V Range, Thread-in Style, 4 Flat Female Harness, for Commander 950, Each

Part Number: HLY-534-198

Not Yet Reviewed

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AutoMeter Wideband Oxygen Sensors 5316

Gauge Sending Units, Replacement, Air/Fuel Ratio - Wideband Gauge Type, Electrical, M18 x 1.5 Thread, Fits Wide Band Pro Plus Oxygen Sensor Gauges,Kit

Part Number: ATM-5316

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today